>>15 Actually, I dunno about your area, but here in NJ, we have a lot of "legit" homeless towns in the woods. Though one of them recently got shut down because it got too much publicity. And in general, it's not a great idea to stand around in 24/7 places for too long unless they're large (like a Walmart-sized place or something). The owners / employees will get suspicious after a while and call the cops on you or kick you out.
Anyway. My brother has basically been homeless for years. He made friends with the pedicabbers out in Arizona and has been borrowing other people's pedicabs on days they're not working to make a few bucks. He got a girlfriend after moving off to Chicago and (as far as I know) lives in her apartment / friend's houses.
It's not a lifestyle for me at the moment, buuuut it's possible. Very possible. (And I should be saying, "but you're underage, you horrible person!" but tbh, it's not my place to say anything since I don't know your situation. It'd be wrong to judge you when I don't know if you're just being a selfish brat or if you are in legitimately bad circumstances.)
Also, unless your parents are abusing you or something (or are the ones who kicked you out), you might want to send them a letter or text explaining why you left and what you're doing. Otherwise they'll probably get the cops on your ass after you've been gone long enough.